Reset the bulb by turning it off and on three times. There are two methods of resetting the bulb:
1) Reset once (off and on 3 times) to reach Easy Mode, which is the primary way to connect to the app. (In Easy Mode, you’ll see the bulb flashing quickly, 2x per second).
2) Reset again (off and on 3 times) to reach AP Mode, which is the Backup Mode to help connect. (When in AP Mode, you’ll see the bulb blinking slowly, every 3 seconds).